This section is from the book "A Treatise On Beverages or The Complete Practical Bottler", by Charles Herman Sulz. Also available from Amazon: A Treatise On Beverages.
This is only prepared for the dispensing counter as follows: Into a pint tumbler put a tablespoonful of powdered sugar, the juice of one lemon, add a little water and one egg, and fill up with broken ice. Then place another tumbler tightly over the top of the first one, shake briskly until the combination is perfected. It is usually sipped through a rye straw in the same manner as a cobbler. This beverage is an all-year-round drink, a healthful beverage, and very nutritious. By pouring bottled lemon soda over the egg and broken ice, and shaking in same manner, the egg-lemonade can also be prepared.